• Omar, J., Alonso, I., Garaikoetxea, A., Etxebarria, N.  Optimization of Focused Ultrasound Extraction and Supercritical Fluid Extraction of Volatile Compounds and Antioxidants from Aromatic Plants Food Analytical Methods,  2013;  6,  1611 - 1620
• Omar, J., Olivares, M., Alzaga, M., Etxebarria, N.  Optimisation and characterisation of marihuana extracts obtained by supercritical fluid extraction and focused ultrasound extraction and retention time locking GC‐MS Journal of Separation Science,  2013;  36(8),  1397 - 1404
• Prieto-Taboada, N., Gómez-Laserna, O., Martinez-Arkarazo, I., Olazabal, M.A., Madariaga, J.M.  Relevance of Cross-Section Analysis in Correct Diagnosis of the State of Conservation of Building Materials As Evidenced by Spectroscopic Imaging Analytical Chemistry,  2013;  85(20),  9501 - 9507
• Prieto-Taboada, N., Ibarrondo, I., Gómez-Laserna, O., Martinez-Arkarazo, I., Olazabal, M.A., Madariaga, J.M.  Buildings as repositories of hazardous pollutants of anthropogenic origin Journal of Hazardous Materials,  2013;  248–249,  451 - 460
• Silva, L.F.O., Fdez-Ortiz de Vallejuelo, S., Martinez-Arkarazo, I., Castro, K., Oliveira, M.L.S., Sampaio, C.H., de Brum, I.A.S., de Leão, F.B., Taffarel, S.R., Madariaga, J.M.  Study of environmental pollution and mineralogical characterization of sediment rivers from Brazilian coal mining acid drainage Science of The Total Environment,  2013;  447,  169 - 178
• Trebolazabala, J., Maguregui, M., Morillas, H., De Diego, A., Madariaga, J.M.  Use of portable devices and confocal Raman spectrometers at different wavelength to obtain the spectral information of the main organic components in tomato (Solanum lycopersicum) fruits Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy,  2013;  105,  391 - 399
• Vallejo, A., Prieto, A., Moeder, M., Usobiaga, A., Zuloaga, O., Etxebarria, N., Paschke, A.  Calibration and field test of the Polar Organic Chemical Integrative Samplers for the determination of 15 endocrine disrupting compounds in wastewater and river water with special focus on performance reference compounds (PRC) Water Research,  2013;  47(8),  2851 - 2862
• Villanueva, U., Raposo, J.C., Madariaga, J.M.  A new methodological approach to assess the mobility of As, Cd, Co, Cr, Cu, Fe, Ni and Pb in river sediments Microchemical Journal,  2013;  106,  107 - 120
• Zuloaga, O., Prieto, A., Ahmed, K., Sarkar, S.K., Bhattacharya, A., Chatterjee, M., Bhattacharya, B.D., Satpathy, K.K.  Distribution of polycyclic aromatic hydrocarbons in recent sediments of Sundarban mangrove wetland of India and Bangladesh: a comparative approach Environmental Earth Sciences,  2013;  68,  355 - 367